Oven.



G. H. STOLP.

OVEN.

APPLICATION FILED MAR. 25, 1914.

1,1 14,931 0 Patented Oct. 27, 191i THE NORRIS PETERS 00.. F'ffo'l'D-LITHO-I NIASHINGYONl D. C

CHARLES H. STOLP, OFAURORA, ILLINOIS.

Specification of Letters Patent.

OVEN.

Patented Oct. 27', 1914.

Application filed March 25, 1914. Serial No. 827,027.

To all whom it may concern Be it known :that I, CHARLES H. STOLP, a

. citizen, of the United States, and a resident of Aurora, in the county of Kane and State of Illinois, have invented certain new and useful Improvements in Ovens, of which the following is a specification.

The present practice of heating houses b means of hot air, hot water, and steam furnaces, involves the maintaining of a considerable mass of burning fuel from which unavoidably a large amount of heat passes directly into the chimney and out into the atmosphere without accomplishing any useful purpose. I am aware that ovens of various kinds and heating drums have already been interposed in the smoke passages from stoves in an attempt to utilize the heat which passes therethrough, but in order to utilize such heat most satisfactory without interfering with the operation of the primary heater, it is believed that the structure should be so formed as to provide sufficient draft space so as not to interfere with the burning of the furnace; that it should also be formed so as to readily permit of the cleaning of the flue ways or draft space; that there should be ample means for modifying or controlling the heat of the oven; that there should be provision of facilities in the oven so that the fumes arising from articles cooked therein may pass into the flue-ways or chimney instead of out into the house; and the oven should be so designed that it is capable of installation under the maximum number of different conditions which are met with in the divers furnace installations.

I believe that I attain the above projects by means of the structure illustrated in the accompanying drawing, in which Figure 1 is a front elevation of my improved oven installed between a furnace and chimney, the door of the oven being open; Fig. 2 is a central vertical transverse section. Fig. 3 is a perspective fragmental detail of one end of the outer casing.

Similar reference characters refer to similar parts throughout the severalviews.

The oven comprises essentially an inner and an outer casing, which when assembled gage or thickness.

constitute a double wall receptacle between the walls of which the products of combustion pass on their way from the combustion chamber of a furnace to the chimney.

The top, 1, bottom, 2, back, 3, and front, 4, of the outer casing may be formed of a single piece of sheet metal of a suitable In the front, 4, is left a preferably rectangular aperture, 5, into which is introduced the inner casing, 6, also made of sheet metal in a rectangular form. Upon the front edges of the bottom, top and end walls of the inner casing are provided outwardly extending right angle flanges, 7, which are adapted to contact the outer face of the front, 4, of the outer casing, and a door, 8, pivoted or hinged to the front 4, when closed extends beyond the flanges, 7, and both covers and closes the inner casing and the juncture of the flanges,7, and the front, 4. There is, however, no danger of the gases of combustion escaping from under the flanges, 7, as the draft in the chimney tends to draw air into the flue instead of letting the gases escape therefrom A preferably separate and removable metal rack, 9, is, provided upon. the inside of the bottom, 2, of the outer casing to support the portion of the inner casing not supported by the front wall 4. The inner casing is so proportioned with respect to the outer casing that there are flue ways or passages between the tops, backs, bottoms and ends of the re spective casings.

The above described arrangement of outer and inner casings will permit the ready removal of the inner casing for the cleaning.

of the flue-ways between the walls of the respective casings.

The outer casing is provided with legs, 10, of a suitable height, and the ends, 11, of said casing comprise blanks provided with right angled flanges upon their edgeswhich contact with and are bolted to the top, bottom and side walls of the outer casing by means of the stove bolts, 12. Openings, 13, with collars, 14, about said openings are provided in the ends, 11, for assembly with the smoke pipe 14 from the furnace, and the smoke pipe, 15, to the chimney. In the end, 11, which receives the smoke pipe, 14, coming from the chimney is provided an openlng closed by a suitable damper, 16, for the purpose of admitting cool. air between the casings to modify the heat in the oven. The

positioning of this damper 16 in the end of the casing into which the gases of combustion come and from which they flow makes it possible to open the damper to admit cool air without causing the gases of combustion to escape therethrough. The fastening of pipe 15, leading to the chimney. By open ing the closure, 17, the fumes arising from the articles being cooked in the oven are allowed to pass directly into the smoke pipe, 15, and thence up the chimney and out of the house. This action is enhanced by the provision of an opening and damper, 18, in the door, 8, which acting either separately or in combination with the hole and closure, 17, comprises other means for controlling the temperature in the oven.

Immediately over the aperture, through which the gases of combustion enter the flue-ways between the casings is provided a damper, 19, upon a rod, 20, extending through the outer casing. By means of this damper, 19, the heat may be caused to pass mostly beneath the oven or around it generally as may be desired for the particular variety of cooking which happens to be in hand.

In the smoke pipe, 15, leading from the flue-ways in the oven to the chimney, are provided the usual damper, 21, and check draft door 22, and I regard it as important that my even be installed in the smoke passage between the combustion chamber and the points of location of the damper, 21, and check draft door, 22, as thereby the oven can be operated without in any manner interfering with the usual regulating of the furnace or a considerable control ofthe temperature of the oven can be secured by the proper adjustment of the damper and check draft.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is 2- 1. An oven adapted to be inserted in the smoke conduit of a heater between the com bustion chamber and the damper and check draft and comprising an outer and an inner casing, the bottom, top, back and end walls of which are spaced apart to provide a suitable flue-way, said inner casing being removably inserted within said outer casing and a door hinged to said outer casing and adapted to cover the juncture of said inner and outer casings and close the compartment of said inner casing.

2. Jldtil oven adapted to be inserted in the smoke conduit of a heater between the combustion chamber and the chimney and comprising an outer and an lnner casing, the front edges of whlch comcide and the other walls of which are spaced to form flue Ways, the ends of sa1d outer casing having means and an entrance and an exit from said flue- Ways for the gases of combustion, said inner casing having an opening and a closure therefor opposite to the exit for the gases of combustion.

4. An oven adapted to be interposed in the smoke conduit of a heater and comprising an outer and an inner casing, the walls of which are spaced to provide flue-ways be tween said casings, and an entrance and an exit from said flue-ways for the gases of combustion, 7 said inner casing having an opening and a closure therefor opposite to the exit for the gases of combustion.

5. An oven adapted to be interposed in the smoke conduit of a heater and comprising an inner and an outer casing, the top, bottom, back and ends of which are spaced to provide flue-ways for the products of combustion, said inner casing being provided with an opening opposite the exit point from the flue-ways, and a door for access to said inner casing, said door having a draft opening and a closure for said draft opening.

6. An oven adapted to be interposed in the smoke conduit of a heater and comprising an inner and an outer casing, the walls whereof are spaced to provide flue-ways for the products of combustion, said inner casing being provided with an opening opposite the eXit point from the flue-ways, and a door for access to said inner casing, said door having a draft opening and a closure for said draft opening.

7. A11 oven adapted to be inserted in the smoke conduit of a heater between the combustion chamber and the chimney, and com-. prising an outer and an inner casing, the bottom, top, bacl'gand end walls of which are spaced apart to provide a suitable flue- Way, said inner casing beingremovably in- In testimony whereof I aflix my signature sex-ted Within said outer casing, and a door in the presence of two witnesses. hinged to one of said casings and adapted CHARLES H. STOLP. to cover the juncture of said inner and outer Witnesses:

5 casings and close the compartment of said E. IQTJUNDY, Jr.,

inner casing. M. A. MILORD.

Copies of this patent maybe obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

